* "Mi Ultimo Adios" (My Last Farewell): This is the most famous of his poems and was written shortly before his execution in 1896. It is considered a powerful expression of love and devotion to the Philippines.
* "A La Juventud Filipina" (To the Filipino Youth): This poem was written in 1879 and is a call to action for Filipino youth to be patriotic, educated, and dedicated to their country's progress.
It's possible you're thinking of a different poem, or maybe there's some confusion about the title.